Results 51 to 60 of about 115,275 (300)

Cracking the Code: Which Ocular Symptoms Predict Dry Eye Signs? Insights From a Large International Sicca Registry

Arthritis Care &Research, EarlyView.
Objective The study aimed to identify symptom‐based predictors of dry eye disease (DED) signs in the Sjögren's International Collaborative Clinical Alliance (SICCA) cohort. Methods We performed a retrospective analysis examining 16 ocular symptoms (most graded 0–4) and artificial tear (AT) use (graded 0–3) as predictors of DED signs (abnormal ocular ...
Pragnya R. Donthineni, Chloe Shields, Rohit Muralidhar, Shreya Bhatt, Alan Baer, Robert Fox, Sara S. McCoy, Anat Galor   +7 more
wiley   +1 more source

High temperature vulcanized ethylene propylene diene rubber nanocomposites as high voltage insulators: Dielectric breakdown measurements and evaluation

Polymers and Polymer Composites, 2022
The use of porcelain and thermoplastic based materials as High voltage insulators has always been dominant in the industry. Several elastomers were also investigated, mainly Ethylene Propylene Rubber and Silicone rubbers were used as replacement of the ...
Ahmed I Abou-Kandil, Loai Nasrat, Eman L. Fareed   +2 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Failure mechanisms of polyimide and perfluoroalkoxy films under high frequency pulses [PDF]

, 2010
Breakdown behaviors of polyimide and perfluoroalkoxy high temperature films under unipolar and bipolar repetitive pulses are investigated. A bipolar 20kV, 20 kHz and fast dV/dt pulse generator has been designed and built to study the impact of pulse ...
Yin, Weijun, Fengfeng Tao, Schweickart, Daniel, Daniel Schweickart, George Chen, Tao, Fengfeng, Zhao, Junwei, Junwei Zhao, Weijun Yin, Chen, George   +9 more
core   +1 more source

The mechanisms of enhanced thickness‐dependent DC breakdown strength of EP/MWCNTs nanocomposites

High Voltage
Owing to advanced power electronic and electrical applications developing towards miniaturisation and integration, the thickness‐dependent DC breakdown mechanism of epoxy/multiwall‐carbon‐nanotube nanocomposites is under investigation.
Zhen Li, He Gao, Longfei Zhang, Shouming Wang, Ji Liu, Shengtao Li   +5 more
doaj   +1 more source

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

A Comparative Study of Physicochemical, Dielectric and Thermal Properties of Pressboard Insulation Impregnated with Natural Ester and Mineral Oil [PDF]

, 2011
Natural ester is considered to be a substitute of mineral oil in the future. To apply natural ester in large transformers safely, natural ester impregnated solid insulation should be proved to have comparable dielectric strength and thermal stability to ...
Yang, Lijun, Hao, Jian, Ruijin Liao, George Chen, Jian Hao, Liao, Ruijin, Ma, Zhiqin, Zhiqin Ma, Lijun Yang, Chen, George   +9 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Space Charge and Breakdown Properties of PP‐Based Insulation Interface in Extrusion Molded Joint for HVDC Submarine Cables

High Voltage
This paper focuses on the space charge and breakdown characteristics of polypropylene (PP)‐based insulation interface in extrusion moulded joint (EMJ) for high‐voltage direct current (HVDC) submarine cables.
Zhonglei Li, Zhong Zheng, Zhaorui Luo, Kai Gao, Xiongjun Liu, Boxue Du   +5 more
doaj   +1 more source